I thought there were a lot of good things about ISANOOK. The staff was very friendly, the room itself was nice, there are lots of facilities on-site to make it overall a pleasant stay. Also, the owner seemed to really care about what was happening and seemed proactive about resolving any problems.
Pros:
*tuk tuk service to Sam Yan metro station (I wished it would have gone to Sala Daeng BTS, but that's just me being selfish).
*nice facilities (pool, kitchen, hot tubs, restaurant, study room/dining room, gym, rec room, TV channels, laundry facilities)
*friendly staff
*location: when it's not so crazy hot, it would be a nice place to stay that's not quite in Silom, but close enough. There were a lot of students staying here and I can understand why.
Cons:
*unclear what services were available. I wasn't aware how "serviced" the serviced residence was until I had to pay 600 baht to have it cleaned. I thought this was a bit pricey for such a small room. I also overheard several other people staying there asking things like "Is someone going to come make up the bed?" If there's a consistent lack of clarity, it might be nice for each room to have some sort of folder or "menu" of services with prices and a map of the facilities.
*Ants. There were ants in the room and in the restaurant. I'm not squeamish (I lived in China too long to be squeamish) and I understand that the heat/humidity bring out the creepy crawlies, but it was a bit unpleasant. They did make efforts by having pest control, but ants on the tables in the restaurant were unsettling.
*No screens on the windows/doors. There were times I didn't want to use the A.C., but opening a window wasn't an option, because all the mosquitoes could fly in.
*The only time I experienced any sort of bad service was in the restaurant (not the Burmese guy---he was lovely!). I came in with a bottle of water and the first thing the waitress said was "you can't drink that in here." I understand the "no outside food/drink" policy, but I ultimately paid 400 baht for my dinner and ordered a beer. That pissed me off, to be honest. I think water should be a freebie. It's f--king hot in Bangkok in April! :)
*Price discrepancy. The contract I signed at the beginning had a cheaper price than what I paid through Air BNB. I didn't make a fuss, because I didn't have the time or energy to do so.

This seems like a lot of negative. I don't intend for it to be. It was a nice place and I would definitely stay there again. Because the host was so conscientious, I think the feedback will be useful to make the place even better.